L_a^(3+)+和D2EHPA萃取反应式及平衡常数的确定

The Determination of Reactive Extraction Eqvation of L_a^(3+) and D2ehpa and Constant of Balance

本文以煤油和石蜡作溶剂.利用萃取平衡法来确定 L_a^(3+)和 D2EHPA(二(2—乙基己基)磷酸)萃取反应方程式,并求出其平衡常数,为液膜法稀土金属离子提供理论分析和计算的依据。

In the paper We use Kerosene and papraffin as solvent and makeuse of extrac- tion balance to determine the equation of reactiveextraction of L3+a and D2EHPA(DI (2—ethyl hexyl)phosphonic acid)Wehave got its constant of balance.Tt provides bases of theoriticalanalysis and calculation for using liquid membrane method to extrac- trare earth metal ions.